North Penn School District
Elementary Math Parent Letter
Grade 4
Unit 1 – Chapter 2: Multiply by 1-Digit Numbers
Examples for each lesson:
Lesson 2.1
Lesson 2.2
Lesson 2.3
More information on this strategy is available on Animated Math Model #5.
Lesson 2.4
More information on this strategy is available on Animated Math Models #6, 7.
Lesson 2.5
More information on this strategy is available on Animated Math Model #8.
Lesson 2.6
Lesson 2.7
Lesson 2.8
More information on this strategy is available on Animated Math Model #8.
Lesson 2.9
Lesson 2.10
More information on this strategy is available on Animated Math Model #9.
Lesson 2.11
More information on this strategy is available on Animated Math Model #10.
Lesson 2.12
Vocabulary
Distributive Property – the property that states that multiplying a sum by a number is the same
as multiplying each addend by the number and then adding the products
Partial product – a method of multiplying in which the ones, tens, hundreds, and so on are
multiplied separately and then the products are added together
Estimate – to find an answer that is close to the exact amount
Expanded form – a way to write numbers by showing the value of each digit
Factor – a number that is multiplied by another number to find a product
Round – to replace a number with another number that tells about how many or how much